I'm trying to use XBMC with Mythv using the myth:// protocol, but after read a lot of forums and pages, and change all the config, I can't make it. When I go to Mythtv protocol, and click on Live TV, all the channels appears, but if I click on one of this, XBMC start to "Loading" forever, and freeze.

Mythtv works fine from the local machine and remotely using another PC...The General configuration of the backned is: